/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.evaluation.value;

import proguard.classfile.Clazz;

/**
 * This ReferenceValue represents a reference value that is identified by a unique ID.
 *
 * @author Eric Lafortune
 */
final class IdentifiedReferenceValue extends TypedReferenceValue {
    private final ValueFactory valuefactory;
    private final int id;

    /**
     * Creates a new reference value with the given ID.
     */
    public IdentifiedReferenceValue(String type, Clazz referencedClass, boolean mayBeExtension, boolean mayBeNull,
        ValueFactory valuefactory, int id) {
        super(type, referencedClass, mayBeExtension, mayBeNull);

        this.valuefactory = valuefactory;
        this.id = id;
    }

    // Implementations of binary methods of ReferenceValue.

    public ReferenceValue generalize(ReferenceValue other) {
        return other.generalize(this);
    }

    public int equal(ReferenceValue other) {
        return other.equal(this);
    }

    // // Implementations of binary ReferenceValue methods with
    // // UnknownReferenceValue arguments.
    //
    // public ReferenceValue generalize(UnknownReferenceValue other)
    // {
    // return other;
    // }
    //
    //
    // public int equal(UnknownReferenceValue other)
    // {
    // return MAYBE;
    // }
    //
    //
    // // Implementations of binary ReferenceValue methods with
    // // TypedReferenceValue arguments.
    //
    // public ReferenceValue generalize(TypedReferenceValue other)
    // {
    // }
    //
    //
    // public int equal(TypedReferenceValue other)
    // {
    // }

    // Implementations of binary ReferenceValue methods with
    // IdentifiedReferenceValue arguments.

    // public ReferenceValue generalize(IdentifiedReferenceValue other)
    // {
    // return generalize((TypedReferenceValue)other);
    // }

    public int equal(IdentifiedReferenceValue other) {
        return this.equals(other) ? ALWAYS : this.equal((TypedReferenceValue)other);
    }

    // // Implementations of binary ReferenceValue methods with
    // // ArrayReferenceValue arguments.
    //
    // public ReferenceValue generalize(ArrayReferenceValue other)
    // {
    // return generalize((TypedReferenceValue)other);
    // }
    //
    //
    // public int equal(ArrayReferenceValue other)
    // {
    // return equal((TypedReferenceValue)other);
    // }
    //
    //
    // // Implementations of binary ReferenceValue methods with
    // // IdentifiedArrayReferenceValue arguments.
    //
    // public ReferenceValue generalize(IdentifiedArrayReferenceValue other)
    // {
    // return generalize((ArrayReferenceValue)other);
    // }
    //
    //
    // public int equal(IdentifiedArrayReferenceValue other)
    // {
    // return equal((ArrayReferenceValue)other);
    // }
    //
    //
    // // Implementations of binary ReferenceValue methods with
    // // DetailedArrayReferenceValue arguments.
    //
    // public ReferenceValue generalize(DetailedArrayReferenceValue other)
    // {
    // return generalize((IdentifiedArrayReferenceValue)other);
    // }
    //
    //
    // public int equal(DetailedArrayReferenceValue other)
    // {
    // return equal((IdentifiedArrayReferenceValue)other);
    // }
    //
    //
    // // Implementations of binary ReferenceValue methods with
    // // TracedReferenceValue arguments.
    //
    // public ReferenceValue generalize(TracedReferenceValue other)
    // {
    // return other.generalize(this);
    // }
    //
    //
    // public int equal(TracedReferenceValue other)
    // {
    // return other.equal(this);
    // }

    // Implementations for Value.

    public boolean isSpecific() {
        return true;
    }

    // Implementations for Object.

    public boolean equals(Object object) {
        if (this == object) {
            return true;
        }

        if (!super.equals(object)) {
            return false;
        }

        IdentifiedReferenceValue other = (IdentifiedReferenceValue)object;
        return this.valuefactory.equals(other.valuefactory) && this.id == other.id;
    }

    public int hashCode() {
        return super.hashCode() ^ valuefactory.hashCode() ^ id;
    }

    public String toString() {
        return super.toString() + '#' + id;
    }
}
